Re: Error in resolving number of staff lines

[David Kastrup]

Marc Hohl <address@hidden> writes:

> Hello list,
>
> the following snippet prints a value of 5 in both cases,
> whereas the second system has
> only four staff lines. What's wrong here?
>
> Regards,
>
> Marc
>
> \version "2.15.41"
>
> #(define (test-bar-print grob)
>    (let* ((staff-symbol (ly:grob-object grob 'staff-symbol))
>           (line-count (if (ly:grob? staff-symbol)
>                           (ly:grob-property staff-symbol 'line-count)
>                           0)))
>           (display "\nNumber of staff lines: ")
>           (display line-count)
>           (ly:bar-line::print grob)))


> \new Staff {
>   \override Staff.StaffSymbol #'line-positions = #'(-2 0 2 4)
>   s1 \bar ":|"
> }

You are only overriding line-positions.  While the bar line printer will
see that this now contains a value and heeds it, this does not magically
affect the (now ignored) line-count property.

-- 
David Kastrup